Some wind resistant plants, although idk how well they’d stand up to freeway speeds (if you wanted to do something like this for some reason)

https://www.gardenersworld.com/plants/10-plants-for-windy-gardens/

I painted the radio antenna on my Subaru florescent orange for that very reason. I probably should have used plastic flowers instead.

You must live in the PNW!?

For the last 17 years I have somehow managed to be the only person in my area with my kind and year car, and being able to find it in a parking lot is one of the reasons I love it.